At least seven persons including four children were killed and 28 others wounded, most of them seriously in a road accident on Srinagar-Jammu national highway on Sunday afternoon.

A senior state government official said the ill-fated bus was heading from Srinagar to Jammu when it skidded off the road and rolled down into a deep gorge at Nandni on the serpentine mountainous highway.

He said the passengers travelling in the bus were from Chattisgarh state. The injured were rushed to the medical college hospital in Jammu.